I'm using the Flash ActiveX control in my Authorware piece. But how can I set up the dimentions? I would like it to be 577/478 pix, but the ActiveX just dumbs it on my screen. I can control the position but not the
dimensions... I have tried the #Scale property but no luck.

When your Flash piece is up, pause Authorware. You should then be able
to click on the ActiveX piece (which will probably now be blank), and
resize it as you wish.